Recurrence scoring system predicting early recurrence for patients with pancreatic ductal adenocarcinoma undergoing pancreatectomy and portomesenteric vein resection

Table 1 Clinicopathological features, %

Features	Training cohort (n = 165)	Validation cohort (n = 112)	P value
Age (years)	61.46 ± 8.262	61.67 ± 8.237	0.836
Sex (male)	55.8	60.7	0.412
Smoking	15.2	15.2	0.995
BMI (kg/m2)	22.0901 ± 2.68962	22.4009 ± 2.78960	0.355
Diabetes mellitus	38.8	38.4	0.947
Pain	69.7	63.4	0.273
Weight loss	23.6	13.4	0.035
Neoadjuvant chemotherapy	26.1	18.8	0.157
Jaundice	28.5	26.8	0.757
Operation types (PD1)	74.5	75.0	0.932
Major complications	6.6	6.3	0.890
Tumor sites2	93.3	95.5	0.441
Tumor size (cm)	3.915 ± 1.6448	3.771 ± 1.6681	0.476
Poor differentiation	49.7	58.9	0.131
Perineural invasion	92.7	94.6	0.526
Portomesenteric vein invasion	49.7	50.9	0.845
Lymph node status (N0)	43.6	42.0	0.783
Pathological stage (stage III)	21.8	21.4	0.938
Recurrence	80.6	80.4	0.953
Early recurrence	42.5	42.7	1.000
Median OS (months)	16.40 (9.67-25.07)	15.60 (9.70-22.70)	0.626
Median RFS (months)	7.40 (2.97-14.85)	7.35 (3.00-15.10)	0.810

¹Pancreaticoduodenectomy.

²Head or neck of pancreas.

BMI: Body mass index; PD: Pancreaticoduodenectomy; OS: Overall survival; RFS: Recurrence free survival.